公开(公告)号：US20250076945A1

公开(公告)日：2025-03-06

申请号：US18498757

申请日：2023-10-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ruchi Shankar ,  Robin O. Hoel ,  Patrick Seem ,  Oddgeir Fikstvedt ,  Jan-Tore Marienborg

IPC: G06F1/26 ,  G06F1/3203 ,  H03K3/356 ,  H03K19/0185

Abstract: Embodiments disclosed herein relate to split rail architecture for power supplies in a system, and more particularly, to providing isolation and control of a power supply. In an example, an integrated circuit device is provided that includes a device voltage supply, an input/output (I/O) voltage supply coupled to the device voltage supply, and a level shifter circuit coupled to the I/O voltage supply. The level shifter circuit includes a pair of cross-coupled p-type metal-oxide semiconductor field effect transistors (PMOS transistors), a pair of n-type transistors (NMOS transistors) coupled between the pair of cross-coupled PMOS transistors and a ground connection, and an inverter circuit coupled to the device voltage supply and the level shifter circuit. The level shifter circuit further includes a capacitor coupled to the pair of cross-coupled PMOS transistors and the ground connection and is in parallel with respect to a first one of the pair of NMOS transistors.